# Q.When one of the links of a kinematic chain is fixed, the chain is known as a

• AStructure
• BMechanism
• CInversion
• DMachine

Mechanism

Hints :

When one of the links of a kinematic chain is fixed, the chain is known as a Mechanism.

The lower pairs are _________ pairs

For an involute gear, the ratio of base circle radius and pitch circle radius is equal to